which can be written in Erdélyi's notation [1]} by taking \(x=z\) , \(b_n=c_n\) , \(\alpha _n= M_n\) , \(\beta _n=L_n\)  and
\(\gamma _n=K_n\) :
for example [2]}
\(\begin{array}{l}\alpha _{n}=M_n=-\frac{(n-\alpha +\lambda +1)(n-\beta +\lambda +1)(n-\gamma +\lambda +1)(n-\mu +1)}{\left(2n+\lambda -\mu +1\right)\left(2n+\lambda -\mu +2\right)}.\end{array}\) 
